EP0055167A1 - Verfahren und Einrichtung zur Anzeige von Nachrichten auf einem nach dem Rasterverfahren arbeitenden Sichtgerät, z.B. dem Bildschirm einer Kathodenstrahlröhre, mittels eines in Blöcke unterteilten Speichers - Google Patents

Verfahren und Einrichtung zur Anzeige von Nachrichten auf einem nach dem Rasterverfahren arbeitenden Sichtgerät, z.B. dem Bildschirm einer Kathodenstrahlröhre, mittels eines in Blöcke unterteilten Speichers Download PDF

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Publication number
EP0055167A1
EP0055167A1 EP81401983A EP81401983A EP0055167A1 EP 0055167 A1 EP0055167 A1 EP 0055167A1 EP 81401983 A EP81401983 A EP 81401983A EP 81401983 A EP81401983 A EP 81401983A EP 0055167 A1 EP0055167 A1 EP 0055167A1
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EP
European Patent Office
Prior art keywords
memory
page
data
base address
zones
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81401983A
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English (en)
French (fr)
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EP0055167B1 (de
Inventor
Gérard Chauvel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments France SAS
Texas Instruments Inc
Original Assignee
Texas Instruments France SAS
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments France SAS, Texas Instruments Inc filed Critical Texas Instruments France SAS
Publication of EP0055167A1 publication Critical patent/EP0055167A1/de
Application granted granted Critical
Publication of EP0055167B1 publication Critical patent/EP0055167B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
    • H04N7/0255—Display systems therefor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/34—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators for rolling or scrolling
    • G09G5/343—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators for rolling or scrolling for systems having a character code-mapped display memory

Definitions

  • the present invention relates, in general, to the display of messages on a display device with a scanned frame such as a cathode-ray tube screen used in particular as a terminal for information processing systems.
  • the invention relates to editing, transmitting and receiving for viewing messages containing page composition data intended to be viewed on the screen of a cathode ray tube.
  • a system enabling these operations to be carried out is commonly called a teletext system.
  • known display devices on cathode ray tubes or the like can display messages according to two display modes, the first of which being the so-called typographic mode and the other being the so-called graphic mode.
  • the matrices are stored in one or more character generators which are formed by read only memories or by corresponding zones of a composite memory associated with the circuit controlling the cathode ray tube.
  • the character generators therefore include addressable positions in which are stored the information necessary for the display of each alphanumeric character which it is proposed to display on the screen.
  • the device To display a page of text, the device also has at least one page memory which is a random access memory and in which tem are stored.
  • the codes of the alphanumeric characters to be displayed are made up of two parts, one of which is the character code proper (in ASCII code, for example) and the other of which is a so-called attribute code relating to color, background and d '' other functions to be performed when viewing the character.
  • Fig.2 shows very schematically the configuration of coded characters stored in a page memory. We see that each coded character 3 corresponds to an alphanumeric character of a row and that it is composed of an attribute code 4 and a character code 5. The coded characters are stored in memory at positions which correspond to those of the characters displayed on the screen.
  • the page memory contains X x Y coded characters.
  • the successive addressing of these coded characters allows access to the character generator thus causing the display.
  • each row of characters is thus displayed by N successive addresses of all the character matrices of a row, this addressing being carried out at the rate of the line scanning of the cathode ray tube. After displaying a complete row, the next row is displayed line by line like the previous one.
  • the other said graphic display mode is to not use character generators - but to use a page memory page containing information as separate items 6 ( Figure 3) as binary coded.
  • This code is in fact a function code relating to the color or the shade of gray of the point to be displayed. It is clear that such a method makes it possible to draw any shape on the screen within the limit of the resolution imposed by the density of the points on the screen.
  • the points are preferably stored in memory positions corresponding to their position in the image displayed during viewing.
  • the page memory is read line by line at the rate of the line scan of the screen.
  • each character requires two bytes (character and attributes) for its identification in the page memory.
  • the viewing methods described above can be combined with the possibility of scrolling the image by moving the text. or graphic or other drawings on the screen or to completely change the image by modifying the entire content of the memory allocated to the display of the current page.
  • all the addresses of characters and attributes stored respectively at all the positions of the page memory are modified to ensure the visualization of a page of which for example a row of characters has disappeared at the top of the screen, while a row has been added at the bottom of it compared to the page previously displayed.
  • the object of the invention is to provide a method and a device of the type indicated above which allow, with a minimum memory capacity, the display of animated images either in the form of scrolling text, or in the form of images giving as in the cinematographic technique the illusion of movement on the screen.
  • the subject of the invention is therefore firstly a method for viewing messages transmitted by a television-type signal and composed of pages displayed on a display device with a frame scanned on the which images corresponding to these pages are traced by line by line scanning, the representative data of the elements of each page to be displayed on the screen being stored in a page memory in the form of a binary code to be extracted under the control of a time-based circuit, itself controlled by the synchronization pulses forming part of said signal, characterized in that it consists in assigning the page memory function to at least two zones of a memory assembly, to give each of said zones a base address which uniquely identifies it and in that to extract the data stored at the positions of said zones, it consists in sending it composite addresses composed of the base address of the memory zone concerned associated with the value of the address of a memory position whose data at an instant considered must be extracted by said composite address for viewing.
  • the invention makes it possible to use a memory unit of a standard design in which the memory zones are delimited in a variable manner according to the needs, by the base addresses, the last position of a given zone being able to be followed immediately by a position which at the instant considered is identified by the base address of another zone of the memory assembly assigned for example to the page memory function.
  • This design of the memory assembly thus makes it possible to obtain considerable processing flexibility, the memory assembly being able to be adapted to each instant viewing needs.
  • the method being intended for the display of messages of which at least certain pages contain at least one part composed of typographic message-elements, which can be viewed selectively using at least two character generators in which typographic character display data are stored, the method consists in assigning the character generator function to other memory areas of said memory set while the addresses extracted from any of the affected areas to a page memory are composite addresses composed in particular of a base address of a code specific to the typographic element to be displayed.
  • the memory unit can be divided into memory zones whose functions are different, namely certain zones are assigned to the page memory function, others to that of character generator, the capacity of these zones being able to at any time be adapted to the needs of the visualization, including with regard to the zones used for the character generators whose / if necessary, the content can also be modified according to the needs.
  • the method consists in selectively and periodically modifying the base addresses identifying said areas assigned to the page memory function in order to periodically extract data from different areas of said memory set, these areas containing display data. at least partially different.
  • the method also consists in periodically modifying the base address identifying a given area assigned to the page memory function only with a corresponding numerical value (80 bytes for example) unlike the start and end address values of a row of message elements to be viewed.
  • the invention also relates to a device for implementing the method of the invention as well as a method and a network for transmitting messages comprising application of the method as defined above.
  • the invention will be described as p plication has a teletext system called "Antiope" but it is understood that it can be applied in all cases where it is displayed on a ray tube cathodic or other massages composed of pages and containing typographic and graphic information.
  • An example of such an application is a terminal of a computer or other similar information processing system.
  • the Antiope teletext system comprises a display terminal which can receive its input information from a telephone line or from a television signal broadcast by a transmitter and comprising in addition analog information relating to the video images constructed from in the conventional way, information in binary form placed in a multiplex on the video signal transmitted in the intervals left free by conventional television standards such as SECAM, PAL, NTSC, etc.
  • each frame signal located between two frame synchronization pulses comprises a video part intended to trace a video image by the conventional analog video signal as well as a part, of a duration of twenty lines, for example, intended for the transmission of teletext, by a signal in binary form.
  • the time interval necessary for the scanning of these lines is therefore filled by a digital signal the composition of which can be that of FIG. 5 which represents an example of the data which can be transmitted between two line synchronization pulses.
  • the signal also includes 32 bytes of data including 12 page flag bytes which indicate the number of the magazine page of which the data under consideration is part. Then, in the case of FIG. 2, follows the information 13 to be visualized actually composed of bytes representing in the case of the typographic mode illustrated and for each character to display a standardized character code (the ASCII code for example), as well as a so-called attribute code which designates certain characteristics of the character to be displayed (color, for example).
  • a standardized character code the ASCII code for example
  • attribute code which designates certain characteristics of the character to be displayed
  • the character "A" to be displayed can be transmitted in the form of two bytes.l4a and 14b comprising from right to left the ASCII code 15 (100-0001 in the occurrences) on seven bits, as well as an attribute code 17 which can be the color of the character or its size for example.
  • the character data may alternate with data relating to the background of the image or to other elements of the message, such as the space code, a line code in the case where lines of the image must be skipped, etc.
  • codes and contained in each interval between two synchronization pulses are, in the case of typographi q ue mode, encoded characters to be written in a page memory which cooperates with one or more generators of characters used for the visualization on the screen.
  • Fig.7 shows part of the data that can be transmitted and interpreted by the receiving station.
  • Each image point Px, Px + 1, Px + 2, Px +3 ... is transmitted in the form of a 3-bit code designating in fact the value of a scale of primary colors or shades of screams and upon receipt this data is stored in the page memory to be viewed without the help of character generators.
  • FIG. 10 concerns the part of the receiver station of the Antiope system capable of separating binary information relating to teletext from the video signal transmitted and of transforming this information into images displayed on a screen of a tube cathodic, here schematized in 18.
  • the station or terminal comprises a memory or composite memory assembly 19 whose sections are assigned to the storage of data of various natures.
  • this memory assembly comprises an area which constitutes a buffer memory 20 capable of temporarily storing input data separate from the video signal applied to the terminal (arrow 21).
  • a buffer memory 20 capable of temporarily storing input data separate from the video signal applied to the terminal (arrow 21).
  • the memory assembly 19 comprises several zones 22 assigned to the storage of pages of information to be displayed, these zones being called page memories and other zones 23 allocated to the storage of the information of characters called generators. of characters. These latter zones can be of the read only memory type while the zones 22 are random access memories as is naturally the buffer memory 20. We will see below how these various zones of the memory assembly are used during the visualization on the screen.
  • the multiplex video signal 21 is applied to a separator circuit 24 called "Didon" in the second article cited above to separate the teletext information from the video signal intended for the broadcasting of i classic video mages.
  • the management of all the data coming from the buffer memory is ensured by a central processing unit 25 (CPU) and by its associated peripheral organs.
  • This unit 25 is responsible in particular for processing the part of the data packets containing the display information proper such as the typographic or graphic mode information.
  • the buffer memory control circuit 20 is represented essentially in the dotted frame 26 of FIG. 10 and it manages the content of the buffer memory 20 as described in the aforementioned second patent application.
  • DMT start of Buffer
  • FMT registers. End of Buffer Memory
  • a stack of registers 27 also containing other registers for storing addresses relating to other areas of the memory assembly 19, as will be explained in more detail below.
  • a start of page address register 28 and one or more character generator start address registers 29.
  • an accumulator 30 is provided which includes in particular counters or pointers PST 1 and PST 2 of the buffer memory 20 as well as other counters such as a counter 31 of the pages of the magazine transmitted.
  • the register stack 27 is connected to the data bus network 32 connected to a data register 33 itself connected by bus 34 to the memory 19, to the Didon separator 24 and to a device 35 for processing typographic and graphic data to be displayed on the screen of the tube 18.
  • This processing device 35 also includes means for ensuring the display of repetitive message elements on the screen of the tube 18 (see in particular the first patent application cited above as well as a third patent application also filed today in the name of the Applicant and entitled "Method and device for the display of messages transmitted by a television type signal, on a device for scanning a screen frame such as the screen of a cathode ray tube, said message comprising repeating elements").
  • the accumulator 30 is connected to an address bus 36 communicating with an address register 37 which is in turn connected to the address input of the memory assembly 19 by a bus 38.
  • a status register 39 is connected to the bus 32 communicating with the central processing unit 25.
  • the teletext display device also includes an arithmetic and logic unit 40 responsible for developing the addresses to be sent to the memory unit 19 on the one hand from the register stack 27 and from the accumulator 30 by a bus 41 and on the other hand from the device 35 for processing by a bus 42 on which.
  • the addresses in ASCII code of the characters stored in the character generators 23 of the memory set 19 circulate.
  • a command register 45 manages the data circulating on the buses to introduce them into the appropriate registers, while a device 46 for direct access to the memory of the transparent type ensures the management of access to the memory 19 by the various organs of the display device without any possible interaction between these organs.
  • a detailed description of such a direct memory access device is found in the patent application filed under the number 77 31 140 on October 17, 1977 in the name of the Applicant and having for title "Direct access device.” to a memory associated with a microprocessor ".
  • the device 46 for direct access to the memory is associated with control logic 47.
  • FIGS. 8 and 9 illustrate the display of messages-containing on each page a mixture of typographical elements and graphic elements. A detailed description of this process can be found in the first patent application cited above.
  • FIG. 8 schematically shows the content of a page memory receiving the data of a page by transfer of this data from the buffer memory 20 under the control of the control circuit 26.
  • the page to be displayed comprises a typographic part as well as a graphic part each distributed over a certain number of lines of the image.
  • the page memory includes a first row address I letterpress phi q ues each constituted by one byte and attribute byte ASCII code, relating to a character to be displayed.
  • this row of addresses therefore has 80 bytes and on the screen, the row of displayed characters occupies ten image lines.
  • the bytes thus stored in the memory are used for visualization and control a character generator in the manner already described, and they therefore relate only to the zone actually visible on the screen indicated in ZRV.
  • the bytes 48 of the non-displayed marginal zone ZM are intended to identify the nature of the next row of addresses in the page memory, this row being in this example a graphic row.
  • This row II is composed, with regard to the zone actually visible, of 120 bytes containing 3 bits of information for 320 image points to be displayed and it ends with two identification bytes 49 relating to the display of the next row III which is. here again of a graphic nature, the content of which is also 120 bytes and which ends with two identification bytes 50. These, in the example, determine the next row IV of a typographic nature.
  • a teletext page can be stored in a page memory by mixing typographic and graphic elements up to the total capacity of the page memory.
  • Fig.9 shows the image that can actually be seen on screen 18 when the page memory is loaded with the information in Fig.8.
  • the memory unit 19 comprises three areas 22 of page memory and three areas 23 of character generators. This configuration can be fixed or, on the contrary, vary according to the needs of the display.
  • each assign them a base address AB ,, AB 2 and AB 3 for example identifying the position at the top left in the zone.
  • AB 1 OA ⁇ , for example in hexadecimal code
  • we extract the data stored at this particular position and we can successively address all the positions of this zone by incrementing the base address by the value of the position in the area.
  • the base address AB 2 could have the value of 11 ⁇ and all the positions of this second area could be addressed by increasing this address value by the value of the position concerned.
  • the first zone can be explored from the base address AB 1 and then the second zone can be explored from the base address AB 2 by modifying the value of a counter which in FIG. 10 is the counter 28 of the stack of registers 27. It is the same for the base address AB 3 . It is thus possible to choose a base address which is between the base addresses AB 1 and AB 3 , which makes it possible to display a page which partially covers two pages defined by any of the base addresses AB 1 , AB 2 and AB 3 .
  • the same principle can be used by assigning to each zone a base address GC 1 , GC 2 , GC 3 ... identifying the positions of the start of the corresponding memory zones.
  • each key is divided into two parts each assigned to a direction of scrolling as indicated by the arrows in Fig. 10.
  • the memory zones 22 contain a passage of the message which occupies several pages to be displayed (here three pages, for example).
  • Scrolling can be obtained by periodically increasing the base address by the number of bytes necessary for display of a row (80 bytes), this increase being worked out in the central processing unit 25 via the keyboard 51.
  • Each increase thus has the effect of removing a row at the top of the screen and add one at the bottom, so that, as it were, the page memory as a memory zone moves into the memory assembly 19.
  • the number of bytes of the base address we get a vertical scroll in the opposite direction.
  • the successive modified values of the base address are loaded into the base register 28 at a rhythm which can be determined by the unit 25. This rhythm can possibly be made variable from the keyboard 51. It will be noted that this scrolling n 'does not imply re-registering the page which scrolls in the memory set 19. up to the part of the message loaded in this set.
  • a conductor 55 applies the frame synchronization pulses or pulses corresponding to the start of the viewable zone ZRV (FIGS. 4 and 8) to the status register 39 from the time-based circuit 43 so that the central unit 25 shifts the loading of the base address into the register 28. If this shift is the duration of one line, the image will be shifted by one line, if this duration is two lines, the shift will be plus as much so on.
  • a special control accessible to the operator can be provided to allow control of both the rhythm and the amplitude of the offset.
  • Scrolling in the horizontal direction can be obtained by the key 54.
  • the base address of the page being viewed is shifted by a number of bytes between O and 80 if the row is typographic or between O and 120 if it is in graphic mode.
  • Fig. 1 1 illustrates the data transmission method in which the method described above is applied.
  • a composition terminal 65 On transmission, a composition terminal 65 is provided which sends composition data entered using the keyboard 66 to a generator 67 of Antiope language (see the aforementioned works).
  • the terminal is associated with a graphic composition table 68 which sends data to a graphic language generator 69.
  • This data is put in the form of information packets (FIG. 5) and mixed in a multiplexer 70 with a video signal picked up by a camera 71.
  • the multiplexer 70 is connected to a transmitter 72 so that the multiplexed signal is broadcast on a television channel.
  • a video receiving station 73 On reception, a video receiving station 73 is provided with an additional device 74 which includes a circuit as shown in FIG. 10.
  • the signal from the generator 67 includes in particular the information concerning the selection of the memory areas and, where appropriate, data concerning the animation of the image on the screen as described above.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Systems (AREA)
  • Controls And Circuits For Display Device (AREA)
EP81401983A 1980-12-12 1981-12-11 Verfahren und Einrichtung zur Anzeige von Nachrichten auf einem nach dem Rasterverfahren arbeitenden Sichtgerät, z.B. dem Bildschirm einer Kathodenstrahlröhre, mittels eines in Blöcke unterteilten Speichers Expired EP0055167B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8026392 1980-12-12
FR8026392A FR2496367B1 (fr) 1980-12-12 1980-12-12 Procede et dispositif pour la visualisation de messages sur un dispositif d'affichage a trame balayee tel qu'un ecran d'un tube a rayons cathodiques par utilisation d'un ensemble memoire composite

Publications (2)

Publication Number Publication Date
EP0055167A1 true EP0055167A1 (de) 1982-06-30
EP0055167B1 EP0055167B1 (de) 1988-06-01

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EP81401983A Expired EP0055167B1 (de) 1980-12-12 1981-12-11 Verfahren und Einrichtung zur Anzeige von Nachrichten auf einem nach dem Rasterverfahren arbeitenden Sichtgerät, z.B. dem Bildschirm einer Kathodenstrahlröhre, mittels eines in Blöcke unterteilten Speichers

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EP (1) EP0055167B1 (de)
DE (1) DE3176772D1 (de)
FR (1) FR2496367B1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
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FR2534043A1 (fr) * 1982-10-01 1984-04-06 Beillard Vincent Systeme d'affichage graphique d'ordinateur de haute resolution
FR2547146A1 (fr) * 1983-06-02 1984-12-07 Texas Instruments France Procede et dispositif pour l'audition de messages parles synthetises et pour la visualisation de messages graphiques correspondants
EP0147542A2 (de) * 1983-10-17 1985-07-10 International Business Machines Corporation Anzeigesystem mit vielfachen Bildfenstern
EP0475275A2 (de) * 1990-09-12 1992-03-18 Texas Instruments Deutschland Gmbh Anordnung zum Verarbeiten von Teletext-Information
EP0497235A2 (de) * 1991-01-31 1992-08-05 EDICO S.r.l. Verbesserter Teletext-Empfänger
FR2744551A1 (fr) * 1996-02-02 1997-08-08 Sagem Dispositif de commande de defilement de donnees sur un ecran de visualisation
US9674560B1 (en) 1981-11-03 2017-06-06 Personalized Media Communications LLC Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods

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US7831204B1 (en) 1981-11-03 2010-11-09 Personalized Media Communications, Llc Signal processing apparatus and methods

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US4141003A (en) * 1977-02-07 1979-02-20 Processor Technology Corporation Control device for video display module
BE877603A (fr) * 1976-09-06 1979-11-05 Telediffusion De France Etat F Perfectionnements aux systemes de transmission numerique et d'affichage de textes sur un ecran de television
DE2839888A1 (de) * 1978-09-13 1980-03-27 Siemens Ag Schaltungsanordnung zum darstellen von symbolen auf dem bildschirm eines sichtgeraetes

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US3798610A (en) * 1972-12-20 1974-03-19 Ibm Multiplexed intelligence communications
FR2406250A1 (fr) * 1977-10-17 1979-05-11 Texas Instruments France Dispositif d'acces direct a une memoire associee a un microprocesseur

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US3996584A (en) * 1973-04-16 1976-12-07 Burroughs Corporation Data handling system having a plurality of interrelated character generators
US4129859A (en) * 1976-02-12 1978-12-12 Hitachi, Ltd. Raster scan type CRT display system having an image rolling function
BE877603A (fr) * 1976-09-06 1979-11-05 Telediffusion De France Etat F Perfectionnements aux systemes de transmission numerique et d'affichage de textes sur un ecran de television
US4141003A (en) * 1977-02-07 1979-02-20 Processor Technology Corporation Control device for video display module
DE2839888A1 (de) * 1978-09-13 1980-03-27 Siemens Ag Schaltungsanordnung zum darstellen von symbolen auf dem bildschirm eines sichtgeraetes

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US10609425B1 (en) 1981-11-03 2020-03-31 Personalized Media Communications, L.L.C. Signal processing apparatus and methods
US10616638B1 (en) 1981-11-03 2020-04-07 Personalized Media Communications LLC Signal processing apparatus and methods
US9674560B1 (en) 1981-11-03 2017-06-06 Personalized Media Communications LLC Signal processing apparatus and methods
US10334292B1 (en) 1981-11-03 2019-06-25 Personalized Media Communications LLC Signal processing apparatus and methods
USRE48633E1 (en) 1981-11-03 2021-07-06 Personalized Media Communications LLC Reprogramming of a programmable device of a specific version
USRE48565E1 (en) 1981-11-03 2021-05-18 Personalized Media Communications LLC Providing a subscriber specific solution in a computer network
USRE48484E1 (en) 1981-11-03 2021-03-23 Personalized Media Communications, Llc Signal processing apparatus and methods
US10715835B1 (en) 1981-11-03 2020-07-14 John Christopher Harvey Signal processing apparatus and methods
USRE47968E1 (en) 1981-11-03 2020-04-28 Personalized Media Communications LLC Signal processing apparatus and methods
USRE47642E1 (en) 1981-11-03 2019-10-08 Personalized Media Communications LLC Signal processing apparatus and methods
USRE47867E1 (en) 1981-11-03 2020-02-18 Personalized Media Communications LLC Signal processing apparatus and methods
USRE48682E1 (en) 1981-11-03 2021-08-10 Personalized Media Communications LLC Providing subscriber specific content in a network
US10523350B1 (en) 1981-11-03 2019-12-31 Personalized Media Communications LLC Signal processing apparatus and methods
FR2534043A1 (fr) * 1982-10-01 1984-04-06 Beillard Vincent Systeme d'affichage graphique d'ordinateur de haute resolution
EP0128093A1 (de) * 1983-06-02 1984-12-12 TEXAS INSTRUMENTS FRANCE Société dite: Allgemeines Verfahren zum Hinzufügen von Mehrsprachigkeit zu Videotextsystemen mit niedriger Datenrate
FR2547146A1 (fr) * 1983-06-02 1984-12-07 Texas Instruments France Procede et dispositif pour l'audition de messages parles synthetises et pour la visualisation de messages graphiques correspondants
EP0147542A3 (en) * 1983-10-17 1989-07-26 International Business Machines Corporation A multiple window display system
EP0147542A2 (de) * 1983-10-17 1985-07-10 International Business Machines Corporation Anzeigesystem mit vielfachen Bildfenstern
EP0475275A3 (en) * 1990-09-12 1993-03-17 Texas Instruments Deutschland Gmbh Arrangement for processing teletext information
EP0475275A2 (de) * 1990-09-12 1992-03-18 Texas Instruments Deutschland Gmbh Anordnung zum Verarbeiten von Teletext-Information
EP0497235A3 (en) * 1991-01-31 1993-03-17 Edico S.R.L. Improved teletext transmission receiver
EP0497235A2 (de) * 1991-01-31 1992-08-05 EDICO S.r.l. Verbesserter Teletext-Empfänger
FR2744551A1 (fr) * 1996-02-02 1997-08-08 Sagem Dispositif de commande de defilement de donnees sur un ecran de visualisation

Also Published As

Publication number Publication date
FR2496367B1 (fr) 1985-11-29
FR2496367A1 (fr) 1982-06-18
DE3176772D1 (en) 1988-07-07
EP0055167B1 (de) 1988-06-01

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